1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
4 * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
26 * Rob Clark <robclark@freedesktop.org>
29 #include <sys/types.h>
33 #include "freedreno_drmif.h"
34 #include "freedreno_priv.h"
36 static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
37 static void * dev_table;
39 struct fd_device * kgsl_device_new(int fd);
41 static struct fd_device * fd_device_new_impl(int fd)
43 struct fd_device *dev;
44 drmVersionPtr version;
46 /* figure out if we are kgsl or msm drm driver: */
47 version = drmGetVersion(fd);
49 ERROR_MSG("cannot get version: %s", strerror(errno));
53 if (!strcmp(version->name, "kgsl")) {
54 DEBUG_MSG("kgsl DRM device");
55 dev = kgsl_device_new(fd);
57 ERROR_MSG("unknown device: %s", version->name);
64 atomic_set(&dev->refcnt, 1);
66 dev->handle_table = drmHashCreate();
67 dev->name_table = drmHashCreate();
72 struct fd_device * fd_device_new(int fd)
74 struct fd_device *dev = NULL;
77 pthread_mutex_lock(&table_lock);
80 dev_table = drmHashCreate();
82 if (drmHashLookup(dev_table, key, (void **)&dev)) {
83 dev = fd_device_new_impl(fd);
85 drmHashInsert(dev_table, key, dev);
87 dev = fd_device_ref(dev);
90 pthread_mutex_unlock(&table_lock);
95 struct fd_device * fd_device_ref(struct fd_device *dev)
97 atomic_inc(&dev->refcnt);
101 void fd_device_del(struct fd_device *dev)
103 if (!atomic_dec_and_test(&dev->refcnt))
105 pthread_mutex_lock(&table_lock);
106 drmHashDestroy(dev->handle_table);
107 drmHashDestroy(dev->name_table);
108 drmHashDelete(dev_table, dev->fd);
109 pthread_mutex_unlock(&table_lock);
110 dev->funcs->destroy(dev);